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Standard deviation of a list
I want to find mean and standard deviation of 1st, 2nd,... digits of several (Z) lists. For example, I have
8 Answers
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How can I pad a String in Java?
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Apache StringUtils has several methods: leftPad, rightPad, center and repeat.
But please note that — as others have mentioned and demonstrated in this answer — String.format() and the Formatter classes in the JDK are better options. Use them over ...
Format a datetime into a string with milliseconds
...ave a datetime string from the date with milliseconds. This code is typical for me and I'm eager to learn how to shorten it.
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Convert Year/Month/Day to Day of Year in Python
...uably pedantic addition, but using date.today() rather than datetime.now() also works and emphasizes the nature of the operation a bit more.
– Jeremy
Dec 30 '13 at 6:57
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Using R to download zipped data file, extract, and import data
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Zip archives are actually more a 'filesystem' with content metadata etc. See help(unzip) for details. So to do what you sketch out above you need to
Create a temp. file name (eg tempfile())
Use download.file() to fetch the file into the temp....
onSaveInstanceState () and onRestoreInstanceState ()
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Usually you restore your state in onCreate(). It is possible to restore it in onRestoreInstanceState() as well, but not very common. (onRestoreInstanceState() is called after onStart(), whereas onCreate() is called before onStar...
CSS opacity only to background color, not the text on it? [duplicate]
...>s or <percentage>s, where the number 255 corresponds to 100%. A (alpha) can be a <number> between 0 and 1, or a <percentage>, where the number 1 corresponds to 100% (full opacity).
RGBa example
rgba(51, 170, 51, .1) /* 10% opaque green */
rgba(51, 170, 51, .4) /* 40% o...
Capitalize first letter. MySQL
Does any one know the equivalent to this TSQL in MySQL parlance?
13 Answers
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Unable to find the wrapper “https” - did you forget to enable it when you configured PHP?
... a 1 GB of RAM. I have XAMPP running with Apache, MySQL, and FileZilla installed.
21 Answers
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How to go from Blob to ArrayBuffer
...I consumes a (immutable) Blob from which the data can be retrieved in several ways. The OP only asked for ArrayBuffer, and here's a demonstration of it.
var blob = GetABlobSomehow();
// NOTE: you will need to wrap this up in a async block first.
/* Use the await keyword to wait for the Promise to ...